refactor: move SignRequestStatus enum to dedicated Enum directory

Move SignRequestStatus from lib/Db/ to lib/Enum/ to follow project
convention of keeping all enums in a dedicated folder alongside
CRLStatus, CRLReason, CertificateType, and DocMdpLevel.

Updated namespace from OCA\Libresign\Db to OCA\Libresign\Enum and
adjusted all imports and references across:
- SignRequest entity (added import)
- ValidateHelper (updated FQN references)
- RequestSignatureService (updated FQN references)
- SequentialSigningService (updated import)
- SignFileService (updated FQN reference)

This improves code organization by consolidating all enum types in
one location.

Signed-off-by: Vitor Mattos <[email protected]>

Author: vitormattos

lib/Db/SignRequest.php

@@ -8,6 +8,7 @@
 
 namespace OCA\Libresign\Db;
 
+use OCA\Libresign\Enum\SignRequestStatus;
 use OCP\AppFramework\Db\Entity;
 use OCP\DB\Types;
 

lib/Db/SignRequestStatus.php lib/Enum/SignRequestStatus.phplib/Db/SignRequestStatus.php renamed to lib/Enum/SignRequestStatus.php

@@ -1,12 +1,13 @@
 <?php
 
 declare(strict_types=1);
+
 /**
  * SPDX-FileCopyrightText: 2025 LibreCode coop and contributors
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
-namespace OCA\Libresign\Db;
+namespace OCA\Libresign\Enum;
 
 enum SignRequestStatus: int {
 	case DRAFT = 0;

lib/Helper/ValidateHelper.php

@@ -720,14 +720,14 @@ private function validateSignerStatus(string $uuid): void {
 		$signRequest = $this->signRequestMapper->getByUuid($uuid);
 		$status = $signRequest->getStatusEnum();
 
-		if ($status === \OCA\Libresign\Db\SignRequestStatus::DRAFT) {
+		if ($status === \OCA\Libresign\Enum\SignRequestStatus::DRAFT) {
 			throw new LibresignException(json_encode([
 				'action' => JSActions::ACTION_DO_NOTHING,
 				'errors' => [['message' => $this->l10n->t('You are not allowed to sign this document yet')]],
 			]));
 		}
 
-		if ($status === \OCA\Libresign\Db\SignRequestStatus::SIGNED) {
+		if ($status === \OCA\Libresign\Enum\SignRequestStatus::SIGNED) {
 			throw new LibresignException(json_encode([
 				'action' => JSActions::ACTION_DO_NOTHING,
 				'errors' => [['message' => $this->l10n->t('Document already signed')]],

lib/Service/RequestSignatureService.php

@@ -267,14 +267,14 @@ private function associateToSigner(
 		$isNewSignRequest = !$signRequest->getId();
 		$currentStatus = $signRequest->getStatusEnum();
 
-		if ($isNewSignRequest || $currentStatus === \OCA\Libresign\Db\SignRequestStatus::DRAFT) {
+		if ($isNewSignRequest || $currentStatus === \OCA\Libresign\Enum\SignRequestStatus::DRAFT) {
 			$initialStatus = $this->determineInitialStatus($signingOrder);
 			$signRequest->setStatusEnum($initialStatus);
 		}
 
 		$this->saveSignRequest($signRequest);
 
-		$shouldNotify = $notify && $signRequest->getStatusEnum() === \OCA\Libresign\Db\SignRequestStatus::ABLE_TO_SIGN;
+		$shouldNotify = $notify && $signRequest->getStatusEnum() === \OCA\Libresign\Enum\SignRequestStatus::ABLE_TO_SIGN;
 
 		foreach ($identifyMethodsIncances as $identifyMethod) {
 			$identifyMethod->getEntity()->setSignRequestId($signRequest->getId());
@@ -284,14 +284,14 @@ private function associateToSigner(
 		return $signRequest;
 	}
 
-	private function determineInitialStatus(int $signingOrder): \OCA\Libresign\Db\SignRequestStatus {
+	private function determineInitialStatus(int $signingOrder): \OCA\Libresign\Enum\SignRequestStatus {
 		if (!$this->sequentialSigningService->isOrderedNumericFlow()) {
-			return \OCA\Libresign\Db\SignRequestStatus::ABLE_TO_SIGN;
+			return \OCA\Libresign\Enum\SignRequestStatus::ABLE_TO_SIGN;
 		}
 
 		return $signingOrder === 1
-			? \OCA\Libresign\Db\SignRequestStatus::ABLE_TO_SIGN
-			: \OCA\Libresign\Db\SignRequestStatus::DRAFT;
+			? \OCA\Libresign\Enum\SignRequestStatus::ABLE_TO_SIGN
+			: \OCA\Libresign\Enum\SignRequestStatus::DRAFT;
 	}
 
 	/**

lib/Service/SequentialSigningService.php

@@ -10,7 +10,8 @@
 
 use OCA\Libresign\AppInfo\Application;
 use OCA\Libresign\Db\SignRequestMapper;
-use OCA\Libresign\Db\SignRequestStatus;
+use OCA\Libresign\Enum\SignatureFlow;
+use OCA\Libresign\Enum\SignRequestStatus;
 use OCP\IAppConfig;
 
 class SequentialSigningService {

lib/Service/SignFileService.php

@@ -376,7 +376,7 @@ protected function updateSignRequest(string $hash): void {
 		$lastSignedDate = $this->getEngine()->getLastSignedDate();
 		$this->signRequest->setSigned($lastSignedDate);
 		$this->signRequest->setSignedHash($hash);
-		$this->signRequest->setStatusEnum(\OCA\Libresign\Db\SignRequestStatus::SIGNED);
+		$this->signRequest->setStatusEnum(\OCA\Libresign\Enum\SignRequestStatus::SIGNED);
 
 		$this->signRequestMapper->update($this->signRequest);